Video: Dab tsi yog qhov tsis raug txheeb xyuas hauv Java?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Unchecked Exception hauv Java yog cov Kev zam uas tuav tsis tau txheeb xyuas lub sij hawm Compile. Cov no kev zam tshwm sim vim qhov programming phem. Qhov kev zov me nyuam yuav tsis muab qhov yuam kev muab tso ua ke. Tag nrho Unchecked kev zam yog cov chav kawm ncaj qha ntawm RuntimeException chav kawm.
Tsis tas li ntawd, dab tsi yog qhov tsis raug txheeb xyuas hauv Java nrog piv txwv?
Piv txwv ntawm cov kev zam uas tsis tau txheeb xyuas yog: ArithmeticException, ArrayStoreException, ClassCastException thiab lwm yam. “Qhov txawv yog qhov ntawd RuntimeException yog nws tus kheej subclass ntawm Exception piv txwv li tag nrho cov unchecked exceptional chav kawm yuav tsum tau raug soj ntsuam kev zam implicitly, Tab sis lawv tsis yog."
Tsis tas li ntawd, dab tsi yog qhov txawv ntawm kev kuaj xyuas thiab tsis kuaj xyuas hauv Java? Lub ntsiab qhov sib txawv ntawm kev kuaj xyuas thiab tsis kuaj xyuas yog tus kuaj xyuas kev zam yog kuaj ntawm compile-lub sij hawm thaum unchecked kev zam yog kuaj ntawm runtime.
Tsis tas li ntawd, koj puas tuaj yeem ntes tsis tau txheeb xyuas hauv Java?
Yog lawm, koj ua tau pov unchecked kev zam nrog pov. Thiab yog, koj tuaj yeem ntes tsis tau txais kev zam hauv a ntes thaiv. Yog lawm koj ua tau tus unchecked kev zam tab sis tsis yuam.
Qhov twg hauv qab no yog ib qho kev zam uas tsis tau kuaj xyuas?
Ib unchecked kev zam yog ib kev zam uas tshwm sim thaum lub sij hawm ua. Cov no tseem hu ua Runtime Kev zam . Cov no suav nrog cov kab mob programming, xws li logic yuam kev lossis siv tsis raug ntawm API. Lub sijhawm ua haujlwm kev zam raug ignored thaum lub sij hawm muab tso ua ke.
Pom zoo:
Dab tsi yog qhov sib txawv loj ntawm kev txheeb xyuas qhov yuam kev thiab kev kho cov lej yuam kev?
Ob qhov kev tshawb nrhiav qhov yuam kev thiab kev kho qhov yuam kev yuav tsum muaj qee qhov ntawm cov ntaub ntawv rov qab xa mus nrog cov ntaub ntawv tiag tiag; kev kho yuav tsum muaj ntau tshaj li kev tshawb nrhiav. Parity bits yog ib txoj hauv kev yooj yim rau kev tshawb nrhiav qhov yuam kev. Ib qho parity me ntsis yog ib qho ntxiv me ntsis xa nrog cov ntaub ntawv uas tsuas yog 1-ntsis suav ntawm cov ntaub ntawv
Dab tsi yog kev saib xyuas tsis raug cai hauv lub xeev kev zam hauv Java?
Raws li tau piav qhia los ntawm cov ntaub ntawv raug cai, IllegalMonitorStateException tuaj yeem tshwm sim thaum cov xov sim tos ntawm cov khoom saib, lossis ceeb toom rau lwm cov xov tos rau cov khoom hais tias, thaum xov tsis muaj tus saib hauv nqe lus nug. Muab lwm txoj kev, yog Lub Object
Dab tsi yog qhov txawv ntawm kev sib raug zoo unary kev sib raug zoo binary thiab kev sib raug zoo ternary?
Kev sib raug zoo tsis sib xws yog thaum ob tus neeg koom hauv kev sib raug zoo yog tib lub koom haum. Piv txwv li: Cov ncauj lus yuav yog qhov yuav tsum tau ua ua ntej rau lwm yam kev kawm. Kev sib raug zoo ternary yog thaum peb lub koom haum koom nrog kev sib raug zoo
Dab tsi yog qhov txawv ntawm kev sib raug zoo thiab tsis muaj kev sib raug zoo databases?
Qhov sib txawv loj ntawm lawv yog li cas lawv tuav cov ntaub ntawv. Relational databases are structured.Non-relational databases are document-oriented. Qhov no hu ua cov ntaub ntawv hom cia tso cai ntau 'qeb' ntawm cov ntaub ntawv khaws cia hauv ib qho kev tsim lossis Cov Ntaub Ntawv
Dab tsi yog qhov tsis raug thaum TV tsis qhib?
Pib los ntawm kev sim rov pib dua koj lub TV. Tshem tawm cov hlua hluav taws xob los ntawm lub qhov hluav taws xob, tom qab ntawd nias thiab tuav lub hwj huam khawm ntawm lub TV (tsis yog lub chaw taws teeb), tsawg kawg 10 vib nas this. Tom qab ntawd tos ob peb feeb thiab ntsaws lub TV rov qab thiab nias lub zog ib zaug. 2 blinks ntawm Samsung TV feem ntau qhia tias muaj hluav taws xob tsis zoo